On Sat, Nov 10, 2012 at 06:33:56AM +0900, YAMANE Toshiaki wrote:
> Modified to eliminate the deep nesting and redundant description.
>
> Signed-off-by: YAMANE Toshiaki <yamanetoshi@xxxxxxxxx>
> ---
> drivers/staging/serqt_usb2/serqt_usb2.c | 147 +++++++++++++++++--------------
> 1 file changed, 80 insertions(+), 67 deletions(-)
>
> diff --git a/drivers/staging/serqt_usb2/serqt_usb2.c b/drivers/staging/serqt_usb2/serqt_usb2.c
> index 9bc8923..0395bdf 100644
> --- a/drivers/staging/serqt_usb2/serqt_usb2.c
> +++ b/drivers/staging/serqt_usb2/serqt_usb2.c
> @@ -291,22 +291,89 @@ static void qt_interrupt_callback(struct urb *urb)
> /* FIXME */
> }
>
> +static int qt_status_change(unsigned int limit,
> + unsigned char *data,
> + int i,
> + struct quatech_port *qt_port,
> + struct usb_serial_port *port)
> +{
> + void (*fn)(struct quatech_port *, unsigned char);
> +
> + if (0x00 == data[i + 2]) {
> + dev_dbg(&port->dev, "Line status status.\n");
> + fn = ProcessLineStatus;
> + } else {
> + dev_dbg(&port->dev, "Modem status status.\n");
> + fn = ProcessModemStatus;
> + }
> +
> + if (i > limit) {
Why can't we test whether i == (RxCount - 3) earlier and handle
the errors there? That way we wouldn't need to pass the limit
variable.
In fact, this whole function is sort of nasty. We start by doing
a switch (data[i + 2]) { then we combine the 0x00 and 0x01 and call
this function which separates them out and sets a function pointer
and then calls the function point? Get rid of this whole function.
You shouldn't need to use function pointers to do this; that's too
many levels of abstraction.
> + dev_dbg(&port->dev,
> + "Illegal escape seuences in received data\n");
> + return 0;
> + }
> +
> + (*fn)(qt_port, data[i + 3]);
> +
> + return 1;
> +}
> +
[snip]
> if (urb->status) {
> qt_port->ReadBulkStopped = 1;
> - dev_dbg(&urb->dev->dev, "%s - nonzero write bulk status received: %d\n",
> + dev_dbg(&urb->dev->dev,
> + "%s - nonzero write bulk status received: %d\n",
> __func__, urb->status);
Don't mix in these unrelated 80 character limit changes.
regards,
dan carpenter
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